Project description:To investigate whether male MPN- and VMHvl-projecting neurons in posterior amygdala have distinct transcriptional profiles, we conducted RNAseq onto these subpoplations that were microdissected by laser capture microdissection. Our results demonstrate that each subpoplations had largely distinct set of enriched genes.
Project description:19 female mice of the C57BL/6J and B6D2F1N strains were housed in either standard (control) or enriched (including access to playgrounds) conditions. The animals were trained to perform a cognitive judgement bias test. Upon completion of training, the animals underwent the test paradigm and were sacrificed. Anterior and posterior portions of the amygdala were finally dissected for RNA-sequencing.
Project description:Analysis of miRNA expression in amygdalae of male C57BL/6J mice following a 6-hour of restraint stress in comparison to control, stress-naïve animals. In this study, we identified overxepression of miR-483-5p in the amygdala of male mice following stress.
Project description:This project examined if sex differences in K48 polyubiquitination in the amygdala were developmentally regulated. This used basolateral amygdala (BLA) samples collected from 4 and 9 week old male and female Sprague-Dawley rats.
Project description:Social isolation poses a severe mental and physiological burden on humans. Most animal models that investigate this effect are based on prolonged isolation, which does not mimic the milder conditions experienced by people in the real world. Here we show that in the medial amygdala, a brain structure that is crucial for social memory, acute social isolation causes social memory loss and significant changes in specific mRNAs and proteins.
Project description:Interleukin (IL)-18 is recognized as a multifunctional mediator in inflammation and immune responses. In addition, the production of IL-18 is stimulated by physiological and/or psychological stress implicated in several behavioral disorders. However, it still remains unclear about the role of IL-18 on the central nervous system. In this study, we analyzed gene expression of 6 brain regions; the olfactory bulb, prefrontal cortex, striatum, amygdala, hypothalamus, and hippocampus. Microarray analysis indicated the regional differences of expression in IL-18-/- mice. In particular, the most profound change was observed in the amygdala, in which 1,237 genes were differentially expressed. We purchased IL-18-/- mice and C57BL/6 mice from Charles River Japan . To produce F1 generation mice, three male IL-18-/- mice were mated with six female C57BL/6J mice. We mated F1 mice and created their F2 littermates. Six week-old F2 mice littermates were weaned. At 12 weeks, mice were sacrificed at 14:00 under general anesthesia with diethyl ether. After the systemic perfusion with cold phosphate-buffered saline through the heart using a syringe attached to a 21-G needle, the whole mouse brains were removed. Coronal brain sections (1 mm thick) were prepared on ice using a brain slicer . The olfactory bulb was sliced between 3.5 and 4.5 anterior to bregma. The prefrontal cortex was sliced between 2.5 and 3.5 mm anterior to bregma. The striatum was sliced between -0.5 and 0.5 mm posterior to bregma. The hypothalamus, the amygdala, and the hippocampus were sliced between 1.5 and 2.5 mm posterior to bregma. Total RNA was immediately prepared from these samples using TRIzol and purified by RNeasy kit.
Project description:This project examined sex differences in the role of K63 polyubiquitination in the amygdala during context fear memory formation in male and female rats.